Solve the following equation

9+x=12

Solve for

9 + x = 12

subtract 9 from both sides

x + 9 - 9 = 12 - 9

x = 3

Free Equation and Inequalities Calculator - Solves an equation or inequality with 1 unknown variable and no exponents as well as certain absolute value equations and inequalities such as |x|=c and |ax| = c where a and c are constants. Solves square root, cube root, and other root equations in the form ax^2=c, ax^2 + b = c. Also solves radical equations in the form asqrt(bx) = c. Also solves open sentences and it will solve one step problems and two step equations. 2 step equations and one step equations and multi step equations

This calculator has 1 input.

This calculator has 1 input.

One Step Equations (Division):
cx = b
x = b/c

One Step Equations (Addition): x + c = b x = b - c

One Step Equations (Subtraction): x - c = b x = b + c

For more math formulas, check out our Formula Dossier

One Step Equations (Addition): x + c = b x = b - c

One Step Equations (Subtraction): x - c = b x = b + c

For more math formulas, check out our Formula Dossier

- equation
- a statement declaring two mathematical expressions are equal
- equation and inequalities
- unknown
- a number or value we do not know
- variable
- Alphabetic character representing a number

Add This Calculator To Your Website